论文标题
通过粒子 - 安排混合和量子力学的局限性生成准粒子
Generation of quasiparticles by particle-antiparticle mixing and limitations of quantum mechanics
论文作者
论文摘要
在文献中，通常在量子力学的框架中讨论了中性不稳定粒子及其反颗粒的混合。在本文中，在量子场理论中充分讨论了粒子 - 抗粒子的混合，并表明量子力学不是在存在这种混合的情况下量子场理论的适当的非偏见极限。此外，还表明，量子力学的结果和量子场理论的结果确实存在差异，这有时会在可观察到的理论预测（例如衰减宽度）的理论预测中产生很大的差异。该结果对中性介子和CP的衰减中的混合有意义。
The mixing of a neutral unstable particle and its antiparticle has been usually discussed in the framework of quantum mechanics in the literature. In this paper, the particle-antiparticle mixing is discussed fully in the quantum field theory, and it is shown that quantum mechanics is not the proper non-relativistic limit of the quantum field theory in the presence of such mixing. Moreover, it is also shown that a discrepancy indeed exists between the results from quantum mechanics and the quantum field theory, which can sometimes make big differences in theoretical predictions of observables such as decay widths. This result has an implication for the mixing of neutral mesons and the CP violation in their decays.
